2 * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
4 * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
5 * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
11 #undef ISDN_TTY_STAT_DEBUG
13 #include <linux/isdn.h>
14 #include <linux/serial.h> /* ASYNC_* flags */
15 #include <linux/slab.h>
16 #include <linux/delay.h>
17 #include <linux/mutex.h>
18 #include "isdn_common.h"
20 #ifdef CONFIG_ISDN_AUDIO
21 #include "isdn_audio.h"
23 #define VBUFX (VBUF/16)
26 #define FIX_FILE_TRANSFER
27 #define DUMMY_HAYES_AT
31 static DEFINE_MUTEX(modem_info_mutex);
32 static int isdn_tty_edit_at(const char *, int, modem_info *);
33 static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *);
34 static void isdn_tty_modem_reset_regs(modem_info *, int);
35 static void isdn_tty_cmd_ATA(modem_info *);
36 static void isdn_tty_flush_buffer(struct tty_struct *);
37 static void isdn_tty_modem_result(int, modem_info *);
38 #ifdef CONFIG_ISDN_AUDIO
39 static int isdn_tty_countDLE(unsigned char *, int);
42 /* Leave this unchanged unless you know what you do! */
43 #define MODEM_PARANOIA_CHECK
44 #define MODEM_DO_RESTART
46 static int bit2si[8] =
47 {1, 5, 7, 7, 7, 7, 7, 7};
48 static int si2bit[8] =
49 {4, 1, 4, 4, 4, 4, 4, 4};
51 /* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
52 * to stuff incoming data directly into a tty's flip-buffer. This
53 * is done to speed up tty-receiving if the receive-queue is empty.
54 * This routine MUST be called with interrupts off.
57 * 0 = Failure, data has to be buffered and later processed by
58 * isdn_tty_readmodem().
61 isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
63 struct tty_port *port = &info->port;
71 if (!(info->mcr & UART_MCR_RTS))
75 #ifdef CONFIG_ISDN_AUDIO
76 + ISDN_AUDIO_SKB_DLECOUNT(skb)
80 c = tty_buffer_request_room(port, len);
84 #ifdef CONFIG_ISDN_AUDIO
85 if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
87 unsigned char *dp = skb->data;
90 tty_insert_flip_char(port, DLE, 0);
91 tty_insert_flip_char(port, *dp++, 0);
94 tty_insert_flip_char(port, DLE, 0);
99 tty_insert_flip_string(port, skb->data, len - 1);
100 last = skb->data[len - 1];
101 #ifdef CONFIG_ISDN_AUDIO
104 if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
105 tty_insert_flip_char(port, last, 0xFF);
107 tty_insert_flip_char(port, last, TTY_NORMAL);
108 tty_flip_buffer_push(port);
114 /* isdn_tty_readmodem() is called periodically from within timer-interrupt.
115 * It tries getting received data from the receive queue an stuff it into
116 * the tty's flip-buffer.
119 isdn_tty_readmodem(void)
127 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
128 midx = dev->m_idx[i];
132 info = &dev->mdm.info[midx];
137 #ifdef CONFIG_ISDN_AUDIO
138 isdn_audio_eval_dtmf(info);
139 if ((info->vonline & 1) && (info->emu.vpar[1]))
140 isdn_audio_eval_silence(info);
142 if (info->mcr & UART_MCR_RTS) {
143 /* CISCO AsyncPPP Hack */
144 if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
145 r = isdn_readbchan_tty(info->isdn_driver,
149 r = isdn_readbchan_tty(info->isdn_driver,
153 tty_flip_buffer_push(&info->port);
164 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
168 isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
172 #ifdef CONFIG_ISDN_AUDIO
177 if ((midx = dev->m_idx[i]) < 0) {
178 /* if midx is invalid, packet is not for tty */
181 info = &dev->mdm.info[midx];
182 #ifdef CONFIG_ISDN_AUDIO
185 if ((info->vonline) && (!info->emu.vpar[4]))
186 isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
187 if ((info->vonline & 1) && (info->emu.vpar[1]))
188 isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
190 if ((info->online < 2)
191 #ifdef CONFIG_ISDN_AUDIO
192 && (!(info->vonline & 1))
195 /* If Modem not listening, drop data */
199 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
200 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
201 /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
202 if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
205 if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
208 /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
209 if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
212 #ifdef CONFIG_ISDN_AUDIO
213 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
214 ISDN_AUDIO_SKB_LOCK(skb) = 0;
215 if (info->vonline & 1) {
216 /* voice conversion/compression */
217 switch (info->emu.vpar[3]) {
222 * Since compressed data takes less
223 * space, we can overwrite the buffer.
225 skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
234 isdn_audio_ulaw2alaw(skb->data, skb->len);
239 isdn_audio_alaw2ulaw(skb->data, skb->len);
242 ISDN_AUDIO_SKB_DLECOUNT(skb) =
243 isdn_tty_countDLE(skb->data, skb->len);
245 #ifdef CONFIG_ISDN_TTY_FAX
247 if (info->faxonline & 2) {
248 isdn_tty_fax_bitorder(info, skb);
249 ISDN_AUDIO_SKB_DLECOUNT(skb) =
250 isdn_tty_countDLE(skb->data, skb->len);
255 /* Try to deliver directly via tty-buf if queue is empty */
256 spin_lock_irqsave(&info->readlock, flags);
257 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
258 if (isdn_tty_try_read(info, skb)) {
259 spin_unlock_irqrestore(&info->readlock, flags);
262 /* Direct deliver failed or queue wasn't empty.
263 * Queue up for later dequeueing via timer-irq.
265 __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
266 dev->drv[di]->rcvcount[channel] +=
268 #ifdef CONFIG_ISDN_AUDIO
269 + ISDN_AUDIO_SKB_DLECOUNT(skb)
272 spin_unlock_irqrestore(&info->readlock, flags);
273 /* Schedule dequeuing */
274 if ((dev->modempoll) && (info->rcvsched))
275 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
280 isdn_tty_cleanup_xmit(modem_info *info)
282 skb_queue_purge(&info->xmit_queue);
283 #ifdef CONFIG_ISDN_AUDIO
284 skb_queue_purge(&info->dtmf_queue);
289 isdn_tty_tint(modem_info *info)
291 struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
297 if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
298 info->isdn_channel, 1, skb)) == len) {
299 struct tty_struct *tty = info->port.tty;
300 info->send_outstanding++;
301 info->msr &= ~UART_MSR_CTS;
302 info->lsr &= ~UART_LSR_TEMT;
307 /* Error: no channel, already shutdown, or wrong parameter */
311 skb_queue_head(&info->xmit_queue, skb);
314 #ifdef CONFIG_ISDN_AUDIO
316 isdn_tty_countDLE(unsigned char *buf, int len)
326 /* This routine is called from within isdn_tty_write() to perform
327 * DLE-decoding when sending audio-data.
330 isdn_tty_handleDLEdown(modem_info *info, atemu *m, int len)
332 unsigned char *p = &info->port.xmit_buf[info->xmit_count];
342 memmove(p, p + 1, len - 1);
353 #ifdef ISDN_DEBUG_MODEM_VOICE
355 "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
358 isdn_tty_at_cout("\020\003", info);
359 if (!info->vonline) {
360 #ifdef ISDN_DEBUG_MODEM_VOICE
362 "DLEdown: send VCON on ttyI%d\n",
365 isdn_tty_at_cout("\r\nVCON\r\n", info);
372 memmove(p, p + 1, len - 1);
386 printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
392 /* This routine is called from within isdn_tty_write() when receiving
393 * audio-data. It interrupts receiving, if an character other than
397 isdn_tty_end_vrx(const char *buf, int c)
403 if ((ch != 0x11) && (ch != 0x13))
410 static int voice_cf[7] =
411 {0, 0, 4, 3, 2, 0, 0};
413 #endif /* CONFIG_ISDN_AUDIO */
415 /* isdn_tty_senddown() is called either directly from within isdn_tty_write()
416 * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
417 * outgoing data from the tty's xmit-buffer, handles voice-decompression or
418 * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
421 isdn_tty_senddown(modem_info *info)
425 #ifdef CONFIG_ISDN_AUDIO
430 #ifdef CONFIG_ISDN_AUDIO
431 if (info->vonline & 4) {
433 if (!info->vonline) {
434 #ifdef ISDN_DEBUG_MODEM_VOICE
436 "senddown: send VCON on ttyI%d\n",
439 isdn_tty_at_cout("\r\nVCON\r\n", info);
443 if (!(buflen = info->xmit_count))
445 if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
446 info->msr &= ~UART_MSR_CTS;
447 info->lsr &= ~UART_LSR_TEMT;
448 /* info->xmit_count is modified here and in isdn_tty_write().
449 * So we return here if isdn_tty_write() is in the
452 atomic_inc(&info->xmit_lock);
453 if (!(atomic_dec_and_test(&info->xmit_lock)))
455 if (info->isdn_driver < 0) {
456 info->xmit_count = 0;
459 skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
460 #ifdef CONFIG_ISDN_AUDIO
461 if (info->vonline & 2)
462 audio_len = buflen * voice_cf[info->emu.vpar[3]];
465 skb = dev_alloc_skb(skb_res + buflen + audio_len);
467 skb = dev_alloc_skb(skb_res + buflen);
471 "isdn_tty: Out of memory in ttyI%d senddown\n",
475 skb_reserve(skb, skb_res);
476 memcpy(skb_put(skb, buflen), info->port.xmit_buf, buflen);
477 info->xmit_count = 0;
478 #ifdef CONFIG_ISDN_AUDIO
479 if (info->vonline & 2) {
480 /* For now, ifmt is fixed to 1 (alaw), since this
481 * is used with ISDN everywhere in the world, except
482 * US, Canada and Japan.
483 * Later, when US-ISDN protocols are implemented,
484 * this setting will depend on the D-channel protocol.
488 /* voice conversion/decompression */
489 switch (info->emu.vpar[3]) {
493 /* adpcm, compatible to ZyXel 1496 modem
494 * with ROM revision 6.01
496 audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
499 skb_put(skb, audio_len),
501 skb_pull(skb, buflen);
502 skb_trim(skb, audio_len);
507 isdn_audio_alaw2ulaw(skb->data,
513 isdn_audio_ulaw2alaw(skb->data,
518 #endif /* CONFIG_ISDN_AUDIO */
519 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
520 /* Add T.70 simplified header */
521 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT)
522 memcpy(skb_push(skb, 2), "\1\0", 2);
524 memcpy(skb_push(skb, 4), "\1\0\1\0", 4);
526 skb_queue_tail(&info->xmit_queue, skb);
529 /************************************************************
533 * mostly "stolen" from original Linux-serial.c and friends.
535 ************************************************************/
537 /* The next routine is called once from within timer-interrupt
538 * triggered within isdn_tty_modem_ncarrier(). It calls
539 * isdn_tty_modem_result() to stuff a "NO CARRIER" Message
540 * into the tty's buffer.
543 isdn_tty_modem_do_ncarrier(unsigned long data)
545 modem_info *info = (modem_info *) data;
546 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
549 /* Next routine is called, whenever the DTR-signal is raised.
550 * It checks the ncarrier-flag, and triggers the above routine
551 * when necessary. The ncarrier-flag is set, whenever DTR goes
555 isdn_tty_modem_ncarrier(modem_info *info)
557 if (info->ncarrier) {
558 info->nc_timer.expires = jiffies + HZ;
559 add_timer(&info->nc_timer);
564 * return the usage calculated by si and layer 2 protocol
567 isdn_calc_usage(int si, int l2)
569 int usg = ISDN_USAGE_MODEM;
571 #ifdef CONFIG_ISDN_AUDIO
574 case ISDN_PROTO_L2_MODEM:
575 usg = ISDN_USAGE_MODEM;
577 #ifdef CONFIG_ISDN_TTY_FAX
578 case ISDN_PROTO_L2_FAX:
579 usg = ISDN_USAGE_FAX;
582 case ISDN_PROTO_L2_TRANS:
584 usg = ISDN_USAGE_VOICE;
592 /* isdn_tty_dial() performs dialing of a tty an the necessary
593 * setup of the lower levels before that.
596 isdn_tty_dial(char *n, modem_info *info, atemu *m)
598 int usg = ISDN_USAGE_MODEM;
600 int l2 = m->mdmreg[REG_L2PROT];
606 for (j = 7; j >= 0; j--)
607 if (m->mdmreg[REG_SI1] & (1 << j)) {
611 usg = isdn_calc_usage(si, l2);
612 #ifdef CONFIG_ISDN_AUDIO
614 (l2 != ISDN_PROTO_L2_MODEM)
615 #ifdef CONFIG_ISDN_TTY_FAX
616 && (l2 != ISDN_PROTO_L2_FAX)
619 l2 = ISDN_PROTO_L2_TRANS;
620 usg = ISDN_USAGE_VOICE;
623 m->mdmreg[REG_SI1I] = si2bit[si];
624 spin_lock_irqsave(&dev->lock, flags);
625 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
627 spin_unlock_irqrestore(&dev->lock, flags);
628 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
630 info->isdn_driver = dev->drvmap[i];
631 info->isdn_channel = dev->chanmap[i];
633 dev->m_idx[i] = info->line;
634 dev->usage[i] |= ISDN_USAGE_OUTGOING;
636 strcpy(info->last_num, n);
638 spin_unlock_irqrestore(&dev->lock, flags);
639 cmd.driver = info->isdn_driver;
640 cmd.arg = info->isdn_channel;
641 cmd.command = ISDN_CMD_CLREAZ;
643 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
644 cmd.driver = info->isdn_driver;
645 cmd.command = ISDN_CMD_SETEAZ;
647 cmd.driver = info->isdn_driver;
648 cmd.command = ISDN_CMD_SETL2;
650 cmd.arg = info->isdn_channel + (l2 << 8);
652 cmd.driver = info->isdn_driver;
653 cmd.command = ISDN_CMD_SETL3;
654 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
655 #ifdef CONFIG_ISDN_TTY_FAX
656 if (l2 == ISDN_PROTO_L2_FAX) {
657 cmd.parm.fax = info->fax;
658 info->fax->direction = ISDN_TTY_FAX_CONN_OUT;
662 cmd.driver = info->isdn_driver;
663 cmd.arg = info->isdn_channel;
664 sprintf(cmd.parm.setup.phone, "%s", n);
665 sprintf(cmd.parm.setup.eazmsn, "%s",
666 isdn_map_eaz2msn(m->msn, info->isdn_driver));
667 cmd.parm.setup.si1 = si;
668 cmd.parm.setup.si2 = m->mdmreg[REG_SI2];
669 cmd.command = ISDN_CMD_DIAL;
671 info->emu.carrierwait = 0;
672 strcpy(dev->num[i], n);
675 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
679 /* isdn_tty_hangup() disassociates a tty from the real
680 * ISDN-line (hangup). The usage-status is cleared
681 * and some cleanup is done also.
684 isdn_tty_modem_hup(modem_info *info, int local)
692 di = info->isdn_driver;
693 ch = info->isdn_channel;
694 if (di < 0 || ch < 0)
697 info->isdn_driver = -1;
698 info->isdn_channel = -1;
700 #ifdef ISDN_DEBUG_MODEM_HUP
701 printk(KERN_DEBUG "Mhup ttyI%d\n", info->line);
704 isdn_tty_flush_buffer(info->port.tty);
706 info->last_lhup = local;
708 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
710 #ifdef CONFIG_ISDN_AUDIO
712 #ifdef CONFIG_ISDN_TTY_FAX
714 info->fax->phase = ISDN_FAX_PHASE_IDLE;
716 info->emu.vpar[4] = 0;
717 info->emu.vpar[5] = 8;
718 kfree(info->dtmf_state);
719 info->dtmf_state = NULL;
720 kfree(info->silence_state);
721 info->silence_state = NULL;
727 if ((info->msr & UART_MSR_RI) &&
728 (info->emu.mdmreg[REG_RUNG] & BIT_RUNG))
729 isdn_tty_modem_result(RESULT_RUNG, info);
730 info->msr &= ~(UART_MSR_DCD | UART_MSR_RI);
731 info->lsr |= UART_LSR_TEMT;
735 cmd.command = ISDN_CMD_HANGUP;
740 isdn_all_eaz(di, ch);
741 info->emu.mdmreg[REG_RINGCNT] = 0;
742 isdn_free_channel(di, ch, 0);
744 if (info->drv_index >= 0) {
745 dev->m_idx[info->drv_index] = -1;
746 info->drv_index = -1;
751 * Begin of a CAPI like interface, currently used only for
752 * supplementary service (CAPI 2.0 part III)
754 #include <linux/isdn/capicmd.h>
755 #include <linux/module.h>
758 isdn_tty_capi_facility(capi_msg *cm) {
759 return (-1); /* dummy */
762 /* isdn_tty_suspend() tries to suspend the current tty connection
765 isdn_tty_suspend(char *id, modem_info *info, atemu *m)
774 #ifdef ISDN_DEBUG_MODEM_SERVICES
775 printk(KERN_DEBUG "Msusp ttyI%d\n", info->line);
778 if ((info->isdn_driver >= 0)) {
779 cmd.parm.cmsg.Length = l + 18;
780 cmd.parm.cmsg.Command = CAPI_FACILITY;
781 cmd.parm.cmsg.Subcommand = CAPI_REQ;
782 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
783 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
784 cmd.parm.cmsg.para[1] = 0;
785 cmd.parm.cmsg.para[2] = l + 3;
786 cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */
787 cmd.parm.cmsg.para[4] = 0;
788 cmd.parm.cmsg.para[5] = l;
789 strncpy(&cmd.parm.cmsg.para[6], id, l);
790 cmd.command = CAPI_PUT_MESSAGE;
791 cmd.driver = info->isdn_driver;
792 cmd.arg = info->isdn_channel;
797 /* isdn_tty_resume() tries to resume a suspended call
798 * setup of the lower levels before that. unfortunately here is no
799 * checking for compatibility of used protocols implemented by Q931
800 * It does the same things like isdn_tty_dial, the last command
801 * is different, may be we can merge it.
805 isdn_tty_resume(char *id, modem_info *info, atemu *m)
807 int usg = ISDN_USAGE_MODEM;
809 int l2 = m->mdmreg[REG_L2PROT];
817 for (j = 7; j >= 0; j--)
818 if (m->mdmreg[REG_SI1] & (1 << j)) {
822 usg = isdn_calc_usage(si, l2);
823 #ifdef CONFIG_ISDN_AUDIO
825 (l2 != ISDN_PROTO_L2_MODEM)
826 #ifdef CONFIG_ISDN_TTY_FAX
827 && (l2 != ISDN_PROTO_L2_FAX)
830 l2 = ISDN_PROTO_L2_TRANS;
831 usg = ISDN_USAGE_VOICE;
834 m->mdmreg[REG_SI1I] = si2bit[si];
835 spin_lock_irqsave(&dev->lock, flags);
836 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
838 spin_unlock_irqrestore(&dev->lock, flags);
839 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
841 info->isdn_driver = dev->drvmap[i];
842 info->isdn_channel = dev->chanmap[i];
844 dev->m_idx[i] = info->line;
845 dev->usage[i] |= ISDN_USAGE_OUTGOING;
847 // strcpy(info->last_num, n);
849 spin_unlock_irqrestore(&dev->lock, flags);
850 cmd.driver = info->isdn_driver;
851 cmd.arg = info->isdn_channel;
852 cmd.command = ISDN_CMD_CLREAZ;
854 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
855 cmd.driver = info->isdn_driver;
856 cmd.command = ISDN_CMD_SETEAZ;
858 cmd.driver = info->isdn_driver;
859 cmd.command = ISDN_CMD_SETL2;
861 cmd.arg = info->isdn_channel + (l2 << 8);
863 cmd.driver = info->isdn_driver;
864 cmd.command = ISDN_CMD_SETL3;
865 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
867 cmd.driver = info->isdn_driver;
868 cmd.arg = info->isdn_channel;
869 cmd.parm.cmsg.Length = l + 18;
870 cmd.parm.cmsg.Command = CAPI_FACILITY;
871 cmd.parm.cmsg.Subcommand = CAPI_REQ;
872 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
873 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
874 cmd.parm.cmsg.para[1] = 0;
875 cmd.parm.cmsg.para[2] = l + 3;
876 cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */
877 cmd.parm.cmsg.para[4] = 0;
878 cmd.parm.cmsg.para[5] = l;
879 strncpy(&cmd.parm.cmsg.para[6], id, l);
880 cmd.command = CAPI_PUT_MESSAGE;
882 // strcpy(dev->num[i], n);
885 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
889 /* isdn_tty_send_msg() sends a message to a HL driver
890 * This is used for hybrid modem cards to send AT commands to it
894 isdn_tty_send_msg(modem_info *info, atemu *m, char *msg)
896 int usg = ISDN_USAGE_MODEM;
898 int l2 = m->mdmreg[REG_L2PROT];
905 l = min(strlen(msg), sizeof(cmd.parm) - sizeof(cmd.parm.cmsg)
906 + sizeof(cmd.parm.cmsg.para) - 2);
909 isdn_tty_modem_result(RESULT_ERROR, info);
912 for (j = 7; j >= 0; j--)
913 if (m->mdmreg[REG_SI1] & (1 << j)) {
917 usg = isdn_calc_usage(si, l2);
918 #ifdef CONFIG_ISDN_AUDIO
920 (l2 != ISDN_PROTO_L2_MODEM)
921 #ifdef CONFIG_ISDN_TTY_FAX
922 && (l2 != ISDN_PROTO_L2_FAX)
925 l2 = ISDN_PROTO_L2_TRANS;
926 usg = ISDN_USAGE_VOICE;
929 m->mdmreg[REG_SI1I] = si2bit[si];
930 spin_lock_irqsave(&dev->lock, flags);
931 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
933 spin_unlock_irqrestore(&dev->lock, flags);
934 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
936 info->isdn_driver = dev->drvmap[i];
937 info->isdn_channel = dev->chanmap[i];
939 dev->m_idx[i] = info->line;
940 dev->usage[i] |= ISDN_USAGE_OUTGOING;
943 spin_unlock_irqrestore(&dev->lock, flags);
944 cmd.driver = info->isdn_driver;
945 cmd.arg = info->isdn_channel;
946 cmd.command = ISDN_CMD_CLREAZ;
948 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
949 cmd.driver = info->isdn_driver;
950 cmd.command = ISDN_CMD_SETEAZ;
952 cmd.driver = info->isdn_driver;
953 cmd.command = ISDN_CMD_SETL2;
955 cmd.arg = info->isdn_channel + (l2 << 8);
957 cmd.driver = info->isdn_driver;
958 cmd.command = ISDN_CMD_SETL3;
959 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
961 cmd.driver = info->isdn_driver;
962 cmd.arg = info->isdn_channel;
963 cmd.parm.cmsg.Length = l + 14;
964 cmd.parm.cmsg.Command = CAPI_MANUFACTURER;
965 cmd.parm.cmsg.Subcommand = CAPI_REQ;
966 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
967 cmd.parm.cmsg.para[0] = l + 1;
968 strncpy(&cmd.parm.cmsg.para[1], msg, l);
969 cmd.parm.cmsg.para[l + 1] = 0xd;
970 cmd.command = CAPI_PUT_MESSAGE;
971 /* info->dialing = 1;
972 strcpy(dev->num[i], n);
980 isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine)
982 #ifdef MODEM_PARANOIA_CHECK
984 printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n",
988 if (info->magic != ISDN_ASYNC_MAGIC) {
989 printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n",
998 * This routine is called to set the UART divisor registers to match
999 * the specified baud rate for a serial port.
1002 isdn_tty_change_speed(modem_info *info)
1004 struct tty_port *port = &info->port;
1012 cflag = port->tty->termios.c_cflag;
1014 quot = i = cflag & CBAUD;
1018 port->tty->termios.c_cflag &= ~CBAUDEX;
1023 info->mcr |= UART_MCR_DTR;
1024 isdn_tty_modem_ncarrier(info);
1026 info->mcr &= ~UART_MCR_DTR;
1027 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1028 #ifdef ISDN_DEBUG_MODEM_HUP
1029 printk(KERN_DEBUG "Mhup in changespeed\n");
1033 isdn_tty_modem_reset_regs(info, 0);
1034 isdn_tty_modem_hup(info, 1);
1038 /* byte size and parity */
1039 cval = cflag & (CSIZE | CSTOPB);
1042 cval |= UART_LCR_PARITY;
1043 if (!(cflag & PARODD))
1044 cval |= UART_LCR_EPAR;
1047 port->flags &= ~ASYNC_CHECK_CD;
1049 port->flags |= ASYNC_CHECK_CD;
1054 isdn_tty_startup(modem_info *info)
1056 if (info->port.flags & ASYNC_INITIALIZED)
1058 isdn_lock_drivers();
1059 #ifdef ISDN_DEBUG_MODEM_OPEN
1060 printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line);
1063 * Now, initialize the UART
1065 info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
1067 clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
1069 * and set the speed of the serial port
1071 isdn_tty_change_speed(info);
1073 info->port.flags |= ASYNC_INITIALIZED;
1074 info->msr |= (UART_MSR_DSR | UART_MSR_CTS);
1075 info->send_outstanding = 0;
1080 * This routine will shutdown a serial port; interrupts are disabled, and
1081 * DTR is dropped if the hangup on close termio flag is on.
1084 isdn_tty_shutdown(modem_info *info)
1086 if (!(info->port.flags & ASYNC_INITIALIZED))
1088 #ifdef ISDN_DEBUG_MODEM_OPEN
1089 printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line);
1091 isdn_unlock_drivers();
1092 info->msr &= ~UART_MSR_RI;
1093 if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {
1094 info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
1095 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1096 isdn_tty_modem_reset_regs(info, 0);
1097 #ifdef ISDN_DEBUG_MODEM_HUP
1098 printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n");
1100 isdn_tty_modem_hup(info, 1);
1104 set_bit(TTY_IO_ERROR, &info->port.tty->flags);
1106 info->port.flags &= ~ASYNC_INITIALIZED;
1109 /* isdn_tty_write() is the main send-routine. It is called from the upper
1110 * levels within the kernel to perform sending data. Depending on the
1111 * online-flag it either directs output to the at-command-interpreter or
1112 * to the lower level. Additional tasks done here:
1113 * - If online, check for escape-sequence (+++)
1114 * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes.
1115 * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed.
1116 * - If dialing, abort dial.
1119 isdn_tty_write(struct tty_struct *tty, const u_char *buf, int count)
1123 modem_info *info = (modem_info *) tty->driver_data;
1124 atemu *m = &info->emu;
1126 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write"))
1128 /* See isdn_tty_senddown() */
1129 atomic_inc(&info->xmit_lock);
1132 if (c > info->xmit_size - info->xmit_count)
1133 c = info->xmit_size - info->xmit_count;
1134 if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize)
1135 c = dev->drv[info->isdn_driver]->maxbufsize;
1138 if ((info->online > 1)
1139 #ifdef CONFIG_ISDN_AUDIO
1140 || (info->vonline & 3)
1143 #ifdef CONFIG_ISDN_AUDIO
1146 isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c,
1149 memcpy(&info->port.xmit_buf[info->xmit_count], buf, c);
1150 #ifdef CONFIG_ISDN_AUDIO
1151 if (info->vonline) {
1152 int cc = isdn_tty_handleDLEdown(info, m, c);
1153 if (info->vonline & 2) {
1155 /* If DLE decoding results in zero-transmit, but
1156 * c originally was non-zero, do a wakeup.
1159 info->msr |= UART_MSR_CTS;
1160 info->lsr |= UART_LSR_TEMT;
1162 info->xmit_count += cc;
1164 if ((info->vonline & 3) == 1) {
1165 /* Do NOT handle Ctrl-Q or Ctrl-S
1166 * when in full-duplex audio mode.
1168 if (isdn_tty_end_vrx(buf, c)) {
1169 info->vonline &= ~1;
1170 #ifdef ISDN_DEBUG_MODEM_VOICE
1172 "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n",
1175 isdn_tty_at_cout("\020\003\r\nVCON\r\n", info);
1179 if (TTY_IS_FCLASS1(info)) {
1180 int cc = isdn_tty_handleDLEdown(info, m, c);
1182 if (info->vonline & 4) { /* ETX seen */
1185 c.command = ISDN_CMD_FAXCMD;
1186 c.driver = info->isdn_driver;
1187 c.arg = info->isdn_channel;
1188 c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL;
1189 c.parm.aux.subcmd = ETX;
1193 #ifdef ISDN_DEBUG_MODEM_VOICE
1194 printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c);
1196 info->xmit_count += cc;
1199 info->xmit_count += c;
1201 info->msr |= UART_MSR_CTS;
1202 info->lsr |= UART_LSR_TEMT;
1203 if (info->dialing) {
1205 #ifdef ISDN_DEBUG_MODEM_HUP
1206 printk(KERN_DEBUG "Mhup in isdn_tty_write\n");
1208 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
1209 isdn_tty_modem_hup(info, 1);
1211 c = isdn_tty_edit_at(buf, c, info);
1217 atomic_dec(&info->xmit_lock);
1218 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
1219 if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
1220 isdn_tty_senddown(info);
1221 isdn_tty_tint(info);
1223 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1229 isdn_tty_write_room(struct tty_struct *tty)
1231 modem_info *info = (modem_info *) tty->driver_data;
1234 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room"))
1237 return info->xmit_size;
1238 ret = info->xmit_size - info->xmit_count;
1239 return (ret < 0) ? 0 : ret;
1243 isdn_tty_chars_in_buffer(struct tty_struct *tty)
1245 modem_info *info = (modem_info *) tty->driver_data;
1247 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer"))
1251 return (info->xmit_count);
1255 isdn_tty_flush_buffer(struct tty_struct *tty)
1262 info = (modem_info *) tty->driver_data;
1263 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) {
1266 isdn_tty_cleanup_xmit(info);
1267 info->xmit_count = 0;
1272 isdn_tty_flush_chars(struct tty_struct *tty)
1274 modem_info *info = (modem_info *) tty->driver_data;
1276 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
1278 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
1279 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1283 * ------------------------------------------------------------
1284 * isdn_tty_throttle()
1286 * This routine is called by the upper-layer tty layer to signal that
1287 * incoming characters should be throttled.
1288 * ------------------------------------------------------------
1291 isdn_tty_throttle(struct tty_struct *tty)
1293 modem_info *info = (modem_info *) tty->driver_data;
1295 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle"))
1298 info->x_char = STOP_CHAR(tty);
1299 info->mcr &= ~UART_MCR_RTS;
1303 isdn_tty_unthrottle(struct tty_struct *tty)
1305 modem_info *info = (modem_info *) tty->driver_data;
1307 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle"))
1313 info->x_char = START_CHAR(tty);
1315 info->mcr |= UART_MCR_RTS;
1319 * ------------------------------------------------------------
1320 * isdn_tty_ioctl() and friends
1321 * ------------------------------------------------------------
1325 * isdn_tty_get_lsr_info - get line status register info
1327 * Purpose: Let user call ioctl() to get info when the UART physically
1328 * is emptied. On bus types like RS485, the transmitter must
1329 * release the bus after transmitting. This must be done when
1330 * the transmit shift register is empty, not be done when the
1331 * transmit holding register is empty. This functionality
1332 * allows RS485 driver to be written in user space.
1335 isdn_tty_get_lsr_info(modem_info *info, uint __user *value)
1341 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1342 return put_user(result, value);
1347 isdn_tty_tiocmget(struct tty_struct *tty)
1349 modem_info *info = (modem_info *) tty->driver_data;
1350 u_char control, status;
1352 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1354 if (tty->flags & (1 << TTY_IO_ERROR))
1357 mutex_lock(&modem_info_mutex);
1358 #ifdef ISDN_DEBUG_MODEM_IOCTL
1359 printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
1362 control = info->mcr;
1364 mutex_unlock(&modem_info_mutex);
1365 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
1366 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
1367 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
1368 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
1369 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
1370 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1374 isdn_tty_tiocmset(struct tty_struct *tty,
1375 unsigned int set, unsigned int clear)
1377 modem_info *info = (modem_info *) tty->driver_data;
1379 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1381 if (tty->flags & (1 << TTY_IO_ERROR))
1384 #ifdef ISDN_DEBUG_MODEM_IOCTL
1385 printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
1388 mutex_lock(&modem_info_mutex);
1389 if (set & TIOCM_RTS)
1390 info->mcr |= UART_MCR_RTS;
1391 if (set & TIOCM_DTR) {
1392 info->mcr |= UART_MCR_DTR;
1393 isdn_tty_modem_ncarrier(info);
1396 if (clear & TIOCM_RTS)
1397 info->mcr &= ~UART_MCR_RTS;
1398 if (clear & TIOCM_DTR) {
1399 info->mcr &= ~UART_MCR_DTR;
1400 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1401 isdn_tty_modem_reset_regs(info, 0);
1402 #ifdef ISDN_DEBUG_MODEM_HUP
1403 printk(KERN_DEBUG "Mhup in TIOCMSET\n");
1407 isdn_tty_modem_hup(info, 1);
1410 mutex_unlock(&modem_info_mutex);
1415 isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg)
1417 modem_info *info = (modem_info *) tty->driver_data;
1420 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
1422 if (tty->flags & (1 << TTY_IO_ERROR))
1425 case TCSBRK: /* SVID version: non-zero arg --> no break */
1426 #ifdef ISDN_DEBUG_MODEM_IOCTL
1427 printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
1429 retval = tty_check_change(tty);
1432 tty_wait_until_sent(tty, 0);
1434 case TCSBRKP: /* support for POSIX tcsendbreak() */
1435 #ifdef ISDN_DEBUG_MODEM_IOCTL
1436 printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
1438 retval = tty_check_change(tty);
1441 tty_wait_until_sent(tty, 0);
1443 case TIOCSERGETLSR: /* Get line status register */
1444 #ifdef ISDN_DEBUG_MODEM_IOCTL
1445 printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
1447 return isdn_tty_get_lsr_info(info, (uint __user *) arg);
1449 #ifdef ISDN_DEBUG_MODEM_IOCTL
1450 printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line);
1452 return -ENOIOCTLCMD;
1458 isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1460 modem_info *info = (modem_info *) tty->driver_data;
1463 isdn_tty_change_speed(info);
1465 if (tty->termios.c_cflag == old_termios->c_cflag &&
1466 tty->termios.c_ispeed == old_termios->c_ispeed &&
1467 tty->termios.c_ospeed == old_termios->c_ospeed)
1469 isdn_tty_change_speed(info);
1474 * ------------------------------------------------------------
1475 * isdn_tty_open() and friends
1476 * ------------------------------------------------------------
1479 static int isdn_tty_install(struct tty_driver *driver, struct tty_struct *tty)
1481 modem_info *info = &dev->mdm.info[tty->index];
1483 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1486 tty->driver_data = info;
1488 return tty_port_install(&info->port, driver, tty);
1492 * This routine is called whenever a serial port is opened. It
1493 * enables interrupts for a serial port, linking in its async structure into
1494 * the IRQ chain. It also performs the serial-specific
1495 * initialization for the tty structure.
1498 isdn_tty_open(struct tty_struct *tty, struct file *filp)
1500 modem_info *info = tty->driver_data;
1501 struct tty_port *port = &info->port;
1504 #ifdef ISDN_DEBUG_MODEM_OPEN
1505 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
1511 * Start up serial port
1513 retval = isdn_tty_startup(info);
1515 #ifdef ISDN_DEBUG_MODEM_OPEN
1516 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1520 retval = tty_port_block_til_ready(port, tty, filp);
1522 #ifdef ISDN_DEBUG_MODEM_OPEN
1523 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1527 #ifdef ISDN_DEBUG_MODEM_OPEN
1528 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1531 #ifdef ISDN_DEBUG_MODEM_OPEN
1532 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1538 isdn_tty_close(struct tty_struct *tty, struct file *filp)
1540 modem_info *info = (modem_info *) tty->driver_data;
1541 struct tty_port *port = &info->port;
1544 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1546 if (tty_hung_up_p(filp)) {
1547 #ifdef ISDN_DEBUG_MODEM_OPEN
1548 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1552 if ((tty->count == 1) && (port->count != 1)) {
1554 * Uh, oh. tty->count is 1, which means that the tty
1555 * structure will be freed. Info->count should always
1556 * be one in these conditions. If it's greater than
1557 * one, we've got real problems, since it means the
1558 * serial port won't be shutdown.
1560 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
1561 "info->count is %d\n", port->count);
1564 if (--port->count < 0) {
1565 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
1566 info->line, port->count);
1570 #ifdef ISDN_DEBUG_MODEM_OPEN
1571 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1579 * At this point we stop accepting input. To do this, we
1580 * disable the receive line status interrupts, and tell the
1581 * interrupt driver to stop checking the data ready bit in the
1582 * line status register.
1584 if (port->flags & ASYNC_INITIALIZED) {
1585 tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */
1587 * Before we drop DTR, make sure the UART transmitter
1588 * has completely drained; this is especially
1589 * important if there is a transmit FIFO!
1591 timeout = jiffies + HZ;
1592 while (!(info->lsr & UART_LSR_TEMT)) {
1593 schedule_timeout_interruptible(20);
1594 if (time_after(jiffies, timeout))
1599 isdn_tty_shutdown(info);
1600 isdn_tty_flush_buffer(tty);
1601 tty_ldisc_flush(tty);
1605 tty_port_close_end(port, tty);
1607 #ifdef ISDN_DEBUG_MODEM_OPEN
1608 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1613 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1616 isdn_tty_hangup(struct tty_struct *tty)
1618 modem_info *info = (modem_info *) tty->driver_data;
1619 struct tty_port *port = &info->port;
1621 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1623 isdn_tty_shutdown(info);
1625 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1627 wake_up_interruptible(&port->open_wait);
1630 /* This routine initializes all emulator-data.
1633 isdn_tty_reset_profile(atemu *m)
1646 m->profile[11] = 70;
1647 m->profile[12] = 0x45;
1649 m->profile[14] = ISDN_PROTO_L2_X75I;
1650 m->profile[15] = ISDN_PROTO_L3_TRANS;
1651 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1652 m->profile[17] = ISDN_MODEM_WINSIZE;
1661 #ifdef CONFIG_ISDN_AUDIO
1663 isdn_tty_modem_reset_vpar(atemu *m)
1665 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1666 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1667 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1668 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1669 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1670 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1674 #ifdef CONFIG_ISDN_TTY_FAX
1676 isdn_tty_modem_reset_faxpar(modem_info *info)
1678 T30_s *f = info->fax;
1681 f->phase = ISDN_FAX_PHASE_IDLE;
1683 f->resolution = 1; /* fine */
1684 f->rate = 5; /* 14400 bit/s */
1691 memset(&f->id[0], 32, FAXIDLEN - 1);
1692 f->id[FAXIDLEN - 1] = 0;
1703 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1704 f->pollid[FAXIDLEN - 1] = 0;
1709 isdn_tty_modem_reset_regs(modem_info *info, int force)
1711 atemu *m = &info->emu;
1712 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1713 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1714 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1715 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1716 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1718 #ifdef CONFIG_ISDN_AUDIO
1719 isdn_tty_modem_reset_vpar(m);
1721 #ifdef CONFIG_ISDN_TTY_FAX
1722 isdn_tty_modem_reset_faxpar(info);
1728 modem_write_profile(atemu *m)
1730 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1731 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1732 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1734 send_sig(SIGIO, dev->profd, 1);
1737 static const struct tty_operations modem_ops = {
1738 .install = isdn_tty_install,
1739 .open = isdn_tty_open,
1740 .close = isdn_tty_close,
1741 .write = isdn_tty_write,
1742 .flush_chars = isdn_tty_flush_chars,
1743 .write_room = isdn_tty_write_room,
1744 .chars_in_buffer = isdn_tty_chars_in_buffer,
1745 .flush_buffer = isdn_tty_flush_buffer,
1746 .ioctl = isdn_tty_ioctl,
1747 .throttle = isdn_tty_throttle,
1748 .unthrottle = isdn_tty_unthrottle,
1749 .set_termios = isdn_tty_set_termios,
1750 .hangup = isdn_tty_hangup,
1751 .tiocmget = isdn_tty_tiocmget,
1752 .tiocmset = isdn_tty_tiocmset,
1755 static int isdn_tty_carrier_raised(struct tty_port *port)
1757 modem_info *info = container_of(port, modem_info, port);
1758 return info->msr & UART_MSR_DCD;
1761 static const struct tty_port_operations isdn_tty_port_ops = {
1762 .carrier_raised = isdn_tty_carrier_raised,
1766 isdn_tty_modem_init(void)
1773 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1776 m->tty_modem->name = "ttyI";
1777 m->tty_modem->major = ISDN_TTY_MAJOR;
1778 m->tty_modem->minor_start = 0;
1779 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1780 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1781 m->tty_modem->init_termios = tty_std_termios;
1782 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
1783 m->tty_modem->flags = TTY_DRIVER_REAL_RAW;
1784 m->tty_modem->driver_name = "isdn_tty";
1785 tty_set_operations(m->tty_modem, &modem_ops);
1786 retval = tty_register_driver(m->tty_modem);
1788 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1791 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1793 #ifdef CONFIG_ISDN_TTY_FAX
1794 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1795 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1797 goto err_unregister;
1800 tty_port_init(&info->port);
1801 info->port.ops = &isdn_tty_port_ops;
1802 spin_lock_init(&info->readlock);
1803 sprintf(info->last_cause, "0000");
1804 sprintf(info->last_num, "none");
1806 info->last_lhup = 1;
1809 isdn_tty_reset_profile(&info->emu);
1810 isdn_tty_modem_reset_regs(info, 1);
1811 info->magic = ISDN_ASYNC_MAGIC;
1814 info->isdn_driver = -1;
1815 info->isdn_channel = -1;
1816 info->drv_index = -1;
1817 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1818 init_timer(&info->nc_timer);
1819 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1820 info->nc_timer.data = (unsigned long) info;
1821 skb_queue_head_init(&info->xmit_queue);
1822 #ifdef CONFIG_ISDN_AUDIO
1823 skb_queue_head_init(&info->dtmf_queue);
1825 info->port.xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5,
1827 if (!info->port.xmit_buf) {
1828 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1830 goto err_unregister;
1832 /* Make room for T.70 header */
1833 info->port.xmit_buf += 4;
1837 for (i--; i >= 0; i--) {
1839 #ifdef CONFIG_ISDN_TTY_FAX
1842 kfree(info->port.xmit_buf - 4);
1843 info->port.xmit_buf = NULL;
1844 tty_port_destroy(&info->port);
1846 tty_unregister_driver(m->tty_modem);
1848 put_tty_driver(m->tty_modem);
1849 m->tty_modem = NULL;
1859 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1860 info = &dev->mdm.info[i];
1861 isdn_tty_cleanup_xmit(info);
1862 #ifdef CONFIG_ISDN_TTY_FAX
1865 kfree(info->port.xmit_buf - 4);
1866 info->port.xmit_buf = NULL;
1867 tty_port_destroy(&info->port);
1869 tty_unregister_driver(dev->mdm.tty_modem);
1870 put_tty_driver(dev->mdm.tty_modem);
1871 dev->mdm.tty_modem = NULL;
1876 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1877 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1878 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1882 isdn_tty_match_icall(char *cid, atemu *emu, int di)
1884 #ifdef ISDN_DEBUG_MODEM_ICALL
1885 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1886 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1887 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1889 if (strlen(emu->lmsn)) {
1890 char *p = emu->lmsn;
1896 if ((q = strchr(p, ';')))
1898 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
1900 #ifdef ISDN_DEBUG_MODEM_ICALL
1901 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
1902 p, isdn_map_eaz2msn(emu->msn, di), tmp);
1917 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
1918 #ifdef ISDN_DEBUG_MODEM_ICALL
1919 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
1920 isdn_map_eaz2msn(emu->msn, di), tmp);
1927 * An incoming call-request has arrived.
1928 * Search the tty-devices for an appropriate device and bind
1929 * it to the ISDN-Channel.
1932 * 0 = No matching device found.
1933 * 1 = A matching device found.
1934 * 3 = No match found, but eventually would match, if
1938 isdn_tty_find_icall(int di, int ch, setup_parm *setup)
1949 if (!setup->phone[0]) {
1951 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
1954 si1 = (int) setup->si1;
1955 si2 = (int) setup->si2;
1956 if (!setup->eazmsn[0]) {
1957 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
1960 eaz = setup->eazmsn;
1961 #ifdef ISDN_DEBUG_MODEM_ICALL
1962 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
1965 spin_lock_irqsave(&dev->lock, flags);
1966 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1967 modem_info *info = &dev->mdm.info[i];
1969 if (info->port.count == 0)
1971 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
1972 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
1973 idx = isdn_dc2minor(di, ch);
1974 #ifdef ISDN_DEBUG_MODEM_ICALL
1975 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
1976 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
1977 info->port.flags, info->isdn_driver,
1978 info->isdn_channel, dev->usage[idx]);
1981 #ifndef FIX_FILE_TRANSFER
1982 (info->port.flags & ASYNC_NORMAL_ACTIVE) &&
1984 (info->isdn_driver == -1) &&
1985 (info->isdn_channel == -1) &&
1986 (USG_NONE(dev->usage[idx]))) {
1989 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
1991 if (!matchret) { /* EAZ is matching */
1992 info->isdn_driver = di;
1993 info->isdn_channel = ch;
1994 info->drv_index = idx;
1995 dev->m_idx[idx] = info->line;
1996 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
1997 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
1998 strcpy(dev->num[idx], nr);
1999 strcpy(info->emu.cpn, eaz);
2000 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
2001 info->emu.mdmreg[REG_PLAN] = setup->plan;
2002 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2004 spin_unlock_irqrestore(&dev->lock, flags);
2005 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2007 info->msr |= UART_MSR_RI;
2008 isdn_tty_modem_result(RESULT_RING, info);
2009 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2015 spin_unlock_irqrestore(&dev->lock, flags);
2016 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
2017 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2)) ? "rejected" : "ignored");
2018 return (wret == 2) ? 3 : 0;
2021 #define TTY_IS_ACTIVE(info) (info->port.flags & ASYNC_NORMAL_ACTIVE)
2024 isdn_tty_stat_callback(int i, isdn_ctrl *c)
2032 if ((mi = dev->m_idx[i]) >= 0) {
2033 info = &dev->mdm.info[mi];
2034 switch (c->command) {
2035 case ISDN_STAT_CINF:
2036 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2037 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2038 if (e == (char *)c->parm.num)
2039 info->emu.charge = 0;
2042 case ISDN_STAT_BSENT:
2043 #ifdef ISDN_TTY_STAT_DEBUG
2044 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
2046 if ((info->isdn_driver == c->driver) &&
2047 (info->isdn_channel == c->arg)) {
2048 info->msr |= UART_MSR_CTS;
2049 if (info->send_outstanding)
2050 if (!(--info->send_outstanding))
2051 info->lsr |= UART_LSR_TEMT;
2052 isdn_tty_tint(info);
2056 case ISDN_STAT_CAUSE:
2057 #ifdef ISDN_TTY_STAT_DEBUG
2058 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2060 /* Signal cause to tty-device */
2061 strncpy(info->last_cause, c->parm.num, 5);
2063 case ISDN_STAT_DISPLAY:
2064 #ifdef ISDN_TTY_STAT_DEBUG
2065 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
2067 /* Signal display to tty-device */
2068 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2069 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2070 isdn_tty_at_cout("\r\n", info);
2071 isdn_tty_at_cout("DISPLAY: ", info);
2072 isdn_tty_at_cout(c->parm.display, info);
2073 isdn_tty_at_cout("\r\n", info);
2076 case ISDN_STAT_DCONN:
2077 #ifdef ISDN_TTY_STAT_DEBUG
2078 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2080 if (TTY_IS_ACTIVE(info)) {
2081 if (info->dialing == 1) {
2087 case ISDN_STAT_DHUP:
2088 #ifdef ISDN_TTY_STAT_DEBUG
2089 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
2091 if (TTY_IS_ACTIVE(info)) {
2092 if (info->dialing == 1)
2093 isdn_tty_modem_result(RESULT_BUSY, info);
2094 if (info->dialing > 1)
2095 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2097 #ifdef ISDN_DEBUG_MODEM_HUP
2098 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
2100 isdn_tty_modem_hup(info, 0);
2104 case ISDN_STAT_BCONN:
2105 #ifdef ISDN_TTY_STAT_DEBUG
2106 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2108 /* Wake up any processes waiting
2109 * for incoming call of this device when
2110 * DCD follow the state of incoming carrier
2112 if (info->port.blocked_open &&
2113 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
2114 wake_up_interruptible(&info->port.open_wait);
2117 /* Schedule CONNECT-Message to any tty
2118 * waiting for it and
2119 * set DCD-bit of its modem-status.
2121 if (TTY_IS_ACTIVE(info) ||
2122 (info->port.blocked_open &&
2123 (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
2124 info->msr |= UART_MSR_DCD;
2125 info->emu.charge = 0;
2126 if (info->dialing & 0xf)
2132 if (USG_MODEM(dev->usage[i])) {
2133 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2134 strcpy(info->emu.connmsg, c->parm.num);
2135 isdn_tty_modem_result(RESULT_CONNECT, info);
2137 isdn_tty_modem_result(RESULT_CONNECT64000, info);
2139 if (USG_VOICE(dev->usage[i]))
2140 isdn_tty_modem_result(RESULT_VCON, info);
2144 case ISDN_STAT_BHUP:
2145 #ifdef ISDN_TTY_STAT_DEBUG
2146 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
2148 if (TTY_IS_ACTIVE(info)) {
2149 #ifdef ISDN_DEBUG_MODEM_HUP
2150 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
2152 isdn_tty_modem_hup(info, 0);
2156 case ISDN_STAT_NODCH:
2157 #ifdef ISDN_TTY_STAT_DEBUG
2158 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2160 if (TTY_IS_ACTIVE(info)) {
2161 if (info->dialing) {
2165 sprintf(info->last_cause, "0000");
2166 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
2168 isdn_tty_modem_hup(info, 0);
2172 case ISDN_STAT_UNLOAD:
2173 #ifdef ISDN_TTY_STAT_DEBUG
2174 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
2176 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2177 info = &dev->mdm.info[i];
2178 if (info->isdn_driver == c->driver) {
2180 isdn_tty_modem_hup(info, 1);
2184 #ifdef CONFIG_ISDN_TTY_FAX
2185 case ISDN_STAT_FAXIND:
2186 if (TTY_IS_ACTIVE(info)) {
2187 isdn_tty_fax_command(info, c);
2191 #ifdef CONFIG_ISDN_AUDIO
2192 case ISDN_STAT_AUDIO:
2193 if (TTY_IS_ACTIVE(info)) {
2194 switch (c->parm.num[0]) {
2195 case ISDN_AUDIO_DTMF:
2196 if (info->vonline) {
2197 isdn_audio_put_dle_code(info,
2210 /*********************************************************************
2211 Modem-Emulator-Routines
2212 *********************************************************************/
2214 #define cmdchar(c) ((c >= ' ') && (c <= 0x7f))
2217 * Put a message from the AT-emulator into receive-buffer of tty,
2218 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2221 isdn_tty_at_cout(char *msg, modem_info *info)
2223 struct tty_port *port = &info->port;
2224 atemu *m = &info->emu;
2228 struct sk_buff *skb = NULL;
2233 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2239 spin_lock_irqsave(&info->readlock, flags);
2240 if (info->closing) {
2241 spin_unlock_irqrestore(&info->readlock, flags);
2245 /* use queue instead of direct, if online and */
2246 /* data is in queue or buffer is full */
2247 if (info->online && ((tty_buffer_request_room(port, l) < l) ||
2248 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
2249 skb = alloc_skb(l, GFP_ATOMIC);
2251 spin_unlock_irqrestore(&info->readlock, flags);
2254 sp = skb_put(skb, l);
2255 #ifdef CONFIG_ISDN_AUDIO
2256 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2257 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2261 for (p = msg; *p; p++) {
2264 c = m->mdmreg[REG_CR];
2267 c = m->mdmreg[REG_LF];
2270 c = m->mdmreg[REG_BS];
2278 if (tty_insert_flip_char(port, c, TTY_NORMAL) == 0)
2283 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2284 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2285 spin_unlock_irqrestore(&info->readlock, flags);
2286 /* Schedule dequeuing */
2287 if (dev->modempoll && info->rcvsched)
2288 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2291 spin_unlock_irqrestore(&info->readlock, flags);
2292 tty_flip_buffer_push(port);
2297 * Perform ATH Hangup
2300 isdn_tty_on_hook(modem_info *info)
2302 if (info->isdn_channel >= 0) {
2303 #ifdef ISDN_DEBUG_MODEM_HUP
2304 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2306 isdn_tty_modem_hup(info, 1);
2311 isdn_tty_off_hook(void)
2313 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2316 #define PLUSWAIT1 (HZ / 2) /* 0.5 sec. */
2317 #define PLUSWAIT2 (HZ * 3 / 2) /* 1.5 sec */
2320 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2321 * isdn_tty_modem_escape() if sequence found.
2324 * p pointer to databuffer
2325 * plus escape-character
2326 * count length of buffer
2327 * pluscount count of valid escape-characters so far
2328 * lastplus timestamp of last character
2331 isdn_tty_check_esc(const u_char *p, u_char plus, int count, int *pluscount,
2342 if (*(p++) == plus) {
2343 if ((*pluscount)++) {
2344 /* Time since last '+' > 0.5 sec. ? */
2345 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2348 /* Time since last non-'+' < 1.5 sec. ? */
2349 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2352 if ((*pluscount == 3) && (count == 1))
2353 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2358 *lastplus = jiffies;
2364 * Return result of AT-emulator to tty-receive-buffer, depending on
2365 * modem-register 12, bit 0 and 1.
2366 * For CONNECT-messages also switch to online-mode.
2367 * For RING-message handle auto-ATA if register 0 != 0
2371 isdn_tty_modem_result(int code, modem_info *info)
2373 atemu *m = &info->emu;
2374 static char *msg[] =
2375 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2376 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2377 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2378 char s[ISDN_MSNLEN + 10];
2382 m->mdmreg[REG_RINGCNT]++;
2383 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2384 /* Automatically accept incoming call */
2385 isdn_tty_cmd_ATA(info);
2387 case RESULT_NO_CARRIER:
2388 #ifdef ISDN_DEBUG_MODEM_HUP
2389 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
2390 info->closing, !info->port.tty);
2392 m->mdmreg[REG_RINGCNT] = 0;
2393 del_timer(&info->nc_timer);
2395 if (info->closing || !info->port.tty)
2398 #ifdef CONFIG_ISDN_AUDIO
2399 if (info->vonline & 1) {
2400 #ifdef ISDN_DEBUG_MODEM_VOICE
2401 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2404 /* voice-recording, add DLE-ETX */
2405 isdn_tty_at_cout("\020\003", info);
2407 if (info->vonline & 2) {
2408 #ifdef ISDN_DEBUG_MODEM_VOICE
2409 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2412 /* voice-playing, add DLE-DC4 */
2413 isdn_tty_at_cout("\020\024", info);
2417 case RESULT_CONNECT:
2418 case RESULT_CONNECT64000:
2419 sprintf(info->last_cause, "0000");
2424 #ifdef ISDN_DEBUG_MODEM_VOICE
2425 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2428 sprintf(info->last_cause, "0000");
2432 } /* switch (code) */
2434 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2436 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2437 /* Show numeric results only */
2438 sprintf(s, "\r\n%d\r\n", code);
2439 isdn_tty_at_cout(s, info);
2441 if (code == RESULT_RING) {
2442 /* return if "show RUNG" and ringcounter>1 */
2443 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
2444 (m->mdmreg[REG_RINGCNT] > 1))
2446 /* print CID, _before_ _every_ ring */
2447 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2448 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2449 isdn_tty_at_cout(dev->num[info->drv_index], info);
2450 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2451 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2452 isdn_tty_at_cout(info->emu.cpn, info);
2456 isdn_tty_at_cout("\r\n", info);
2457 isdn_tty_at_cout(msg[code], info);
2459 case RESULT_CONNECT:
2460 switch (m->mdmreg[REG_L2PROT]) {
2461 case ISDN_PROTO_L2_MODEM:
2462 isdn_tty_at_cout(" ", info);
2463 isdn_tty_at_cout(m->connmsg, info);
2468 /* Append CPN, if enabled */
2469 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2470 sprintf(s, "/%s", m->cpn);
2471 isdn_tty_at_cout(s, info);
2473 /* Print CID only once, _after_ 1st RING */
2474 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2475 (m->mdmreg[REG_RINGCNT] == 1)) {
2476 isdn_tty_at_cout("\r\n", info);
2477 isdn_tty_at_cout("CALLER NUMBER: ", info);
2478 isdn_tty_at_cout(dev->num[info->drv_index], info);
2479 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2480 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2481 isdn_tty_at_cout(info->emu.cpn, info);
2485 case RESULT_NO_CARRIER:
2486 case RESULT_NO_DIALTONE:
2488 case RESULT_NO_ANSWER:
2489 m->mdmreg[REG_RINGCNT] = 0;
2490 /* Append Cause-Message if enabled */
2491 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2492 sprintf(s, "/%s", info->last_cause);
2493 isdn_tty_at_cout(s, info);
2496 case RESULT_CONNECT64000:
2497 /* Append Protocol to CONNECT message */
2498 switch (m->mdmreg[REG_L2PROT]) {
2499 case ISDN_PROTO_L2_X75I:
2500 case ISDN_PROTO_L2_X75UI:
2501 case ISDN_PROTO_L2_X75BUI:
2502 isdn_tty_at_cout("/X.75", info);
2504 case ISDN_PROTO_L2_HDLC:
2505 isdn_tty_at_cout("/HDLC", info);
2507 case ISDN_PROTO_L2_V11096:
2508 isdn_tty_at_cout("/V110/9600", info);
2510 case ISDN_PROTO_L2_V11019:
2511 isdn_tty_at_cout("/V110/19200", info);
2513 case ISDN_PROTO_L2_V11038:
2514 isdn_tty_at_cout("/V110/38400", info);
2517 if (m->mdmreg[REG_T70] & BIT_T70) {
2518 isdn_tty_at_cout("/T.70", info);
2519 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2520 isdn_tty_at_cout("+", info);
2524 isdn_tty_at_cout("\r\n", info);
2527 if (code == RESULT_NO_CARRIER) {
2528 if (info->closing || (!info->port.tty))
2531 if (info->port.flags & ASYNC_CHECK_CD)
2532 tty_hangup(info->port.tty);
2538 * Display a modem-register-value.
2541 isdn_tty_show_profile(int ridx, modem_info *info)
2545 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2546 isdn_tty_at_cout(v, info);
2550 * Get MSN-string from char-pointer, set pointer to end of number
2553 isdn_tty_get_msnstr(char *n, char **p)
2555 int limit = ISDN_MSNLEN - 1;
2557 while (((*p[0] >= '0' && *p[0] <= '9') ||
2558 /* Why a comma ??? */
2559 (*p[0] == ',') || (*p[0] == ':')) &&
2566 * Get phone-number from modem-commandbuffer
2569 isdn_tty_getdial(char *p, char *q, int cnt)
2572 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
2575 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt > 0) {
2576 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
2577 ((*p == 'R') && first) ||
2578 (*p == '*') || (*p == '#')) {
2590 #define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2591 #define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2594 isdn_tty_report(modem_info *info)
2596 atemu *m = &info->emu;
2599 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2600 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2601 isdn_tty_at_cout(s, info);
2602 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2603 isdn_tty_at_cout(s, info);
2604 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2605 switch (info->last_l2) {
2606 case ISDN_PROTO_L2_X75I:
2607 isdn_tty_at_cout("X.75i", info);
2609 case ISDN_PROTO_L2_X75UI:
2610 isdn_tty_at_cout("X.75ui", info);
2612 case ISDN_PROTO_L2_X75BUI:
2613 isdn_tty_at_cout("X.75bui", info);
2615 case ISDN_PROTO_L2_HDLC:
2616 isdn_tty_at_cout("HDLC", info);
2618 case ISDN_PROTO_L2_V11096:
2619 isdn_tty_at_cout("V.110 9600 Baud", info);
2621 case ISDN_PROTO_L2_V11019:
2622 isdn_tty_at_cout("V.110 19200 Baud", info);
2624 case ISDN_PROTO_L2_V11038:
2625 isdn_tty_at_cout("V.110 38400 Baud", info);
2627 case ISDN_PROTO_L2_TRANS:
2628 isdn_tty_at_cout("transparent", info);
2630 case ISDN_PROTO_L2_MODEM:
2631 isdn_tty_at_cout("modem", info);
2633 case ISDN_PROTO_L2_FAX:
2634 isdn_tty_at_cout("fax", info);
2637 isdn_tty_at_cout("unknown", info);
2640 if (m->mdmreg[REG_T70] & BIT_T70) {
2641 isdn_tty_at_cout("/T.70", info);
2642 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2643 isdn_tty_at_cout("+", info);
2645 isdn_tty_at_cout("\r\n", info);
2646 isdn_tty_at_cout(" Service: ", info);
2647 switch (info->last_si) {
2649 isdn_tty_at_cout("audio\r\n", info);
2652 isdn_tty_at_cout("btx\r\n", info);
2655 isdn_tty_at_cout("data\r\n", info);
2658 sprintf(s, "%d\r\n", info->last_si);
2659 isdn_tty_at_cout(s, info);
2662 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2663 isdn_tty_at_cout(s, info);
2664 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2665 isdn_tty_at_cout(s, info);
2669 * Parse AT&.. commands.
2672 isdn_tty_cmd_ATand(char **p, modem_info *info)
2674 atemu *m = &info->emu;
2678 #define MAXRB (sizeof(rb) - 1)
2682 /* &B - Set Buffersize */
2685 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2687 #ifdef CONFIG_ISDN_AUDIO
2688 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2691 m->mdmreg[REG_PSIZE] = i / 16;
2692 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2693 switch (m->mdmreg[REG_L2PROT]) {
2694 case ISDN_PROTO_L2_V11096:
2695 case ISDN_PROTO_L2_V11019:
2696 case ISDN_PROTO_L2_V11038:
2697 info->xmit_size /= 10;
2701 /* &C - DCD Status */
2703 switch (isdn_getnum(p)) {
2705 m->mdmreg[REG_DCD] &= ~BIT_DCD;
2708 m->mdmreg[REG_DCD] |= BIT_DCD;
2715 /* &D - Set DTR-Low-behavior */
2717 switch (isdn_getnum(p)) {
2719 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2720 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2723 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2724 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2727 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2728 m->mdmreg[REG_DTRR] |= BIT_DTRR;
2735 /* &E -Set EAZ/MSN */
2737 isdn_tty_get_msnstr(m->msn, p);
2740 /* &F -Set Factory-Defaults */
2742 if (info->msr & UART_MSR_DCD)
2744 isdn_tty_reset_profile(m);
2745 isdn_tty_modem_reset_regs(info, 1);
2747 #ifdef DUMMY_HAYES_AT
2749 /* only for be compilant with common scripts */
2750 /* &K Flowcontrol - no function */
2756 /* &L -Set Numbers to listen on */
2759 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
2760 (i < ISDN_LMSNLEN - 1))
2761 m->lmsn[i++] = *p[0]++;
2765 /* &R - Set V.110 bitrate adaption */
2770 /* Switch off V.110, back to X.75 */
2771 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2772 m->mdmreg[REG_SI2] = 0;
2773 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2776 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2777 m->mdmreg[REG_SI2] = 197;
2778 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2781 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2782 m->mdmreg[REG_SI2] = 199;
2783 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2786 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2787 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2788 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2793 /* Switch off T.70 */
2794 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2796 m->mdmreg[REG_SI1] |= 4;
2799 /* &S - Set Windowsize */
2802 if ((i > 0) && (i < 9))
2803 m->mdmreg[REG_WSIZE] = i;
2808 /* &V - Show registers */
2810 isdn_tty_at_cout("\r\n", info);
2811 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2812 sprintf(rb, "S%02d=%03d%s", i,
2813 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2814 isdn_tty_at_cout(rb, info);
2816 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2817 strlen(m->msn) ? m->msn : "None");
2818 isdn_tty_at_cout(rb, info);
2819 if (strlen(m->lmsn)) {
2820 isdn_tty_at_cout("\r\nListen: ", info);
2821 isdn_tty_at_cout(m->lmsn, info);
2822 isdn_tty_at_cout("\r\n", info);
2826 /* &W - Write Profile */
2831 modem_write_profile(m);
2838 /* &X - Switch to BTX-Mode and T.70 */
2840 switch (isdn_getnum(p)) {
2842 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2843 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2846 m->mdmreg[REG_T70] |= BIT_T70;
2847 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2848 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2849 info->xmit_size = 112;
2850 m->mdmreg[REG_SI1] = 4;
2851 m->mdmreg[REG_SI2] = 0;
2854 m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT);
2855 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2856 info->xmit_size = 112;
2857 m->mdmreg[REG_SI1] = 4;
2858 m->mdmreg[REG_SI2] = 0;
2871 isdn_tty_check_ats(int mreg, int mval, modem_info *info, atemu *m)
2873 /* Some plausibility checks */
2876 if (mval > ISDN_PROTO_L2_MAX)
2880 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2882 #ifdef CONFIG_ISDN_AUDIO
2883 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
2886 info->xmit_size = mval * 16;
2887 switch (m->mdmreg[REG_L2PROT]) {
2888 case ISDN_PROTO_L2_V11096:
2889 case ISDN_PROTO_L2_V11019:
2890 case ISDN_PROTO_L2_V11038:
2891 info->xmit_size /= 10;
2897 /* readonly registers */
2904 * Perform ATS command
2907 isdn_tty_cmd_ATS(char **p, modem_info *info)
2909 atemu *m = &info->emu;
2915 mreg = isdn_getnum(p);
2916 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
2921 mval = isdn_getnum(p);
2922 if (mval < 0 || mval > 255)
2924 if (isdn_tty_check_ats(mreg, mval, info, m))
2926 m->mdmreg[mreg] = mval;
2929 /* Set/Clear a single bit */
2931 bitpos = isdn_getnum(p);
2932 if ((bitpos < 0) || (bitpos > 7))
2937 bval = isdn_getnum(p);
2938 if (bval < 0 || bval > 1)
2941 mval = m->mdmreg[mreg] | (1 << bitpos);
2943 mval = m->mdmreg[mreg] & ~(1 << bitpos);
2944 if (isdn_tty_check_ats(mreg, mval, info, m))
2946 m->mdmreg[mreg] = mval;
2950 isdn_tty_at_cout("\r\n", info);
2951 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
2960 isdn_tty_show_profile(mreg, info);
2970 * Perform ATA command
2973 isdn_tty_cmd_ATA(modem_info *info)
2975 atemu *m = &info->emu;
2979 if (info->msr & UART_MSR_RI) {
2980 /* Accept incoming call */
2982 strcpy(info->last_num, dev->num[info->drv_index]);
2983 m->mdmreg[REG_RINGCNT] = 0;
2984 info->msr &= ~UART_MSR_RI;
2985 l2 = m->mdmreg[REG_L2PROT];
2986 #ifdef CONFIG_ISDN_AUDIO
2987 /* If more than one bit set in reg18, autoselect Layer2 */
2988 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
2989 if (m->mdmreg[REG_SI1I] == 1) {
2990 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
2991 l2 = ISDN_PROTO_L2_TRANS;
2993 l2 = ISDN_PROTO_L2_X75I;
2996 cmd.driver = info->isdn_driver;
2997 cmd.command = ISDN_CMD_SETL2;
2998 cmd.arg = info->isdn_channel + (l2 << 8);
3001 cmd.driver = info->isdn_driver;
3002 cmd.command = ISDN_CMD_SETL3;
3003 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3004 #ifdef CONFIG_ISDN_TTY_FAX
3005 if (l2 == ISDN_PROTO_L2_FAX) {
3006 cmd.parm.fax = info->fax;
3007 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3011 cmd.driver = info->isdn_driver;
3012 cmd.arg = info->isdn_channel;
3013 cmd.command = ISDN_CMD_ACCEPTD;
3015 info->emu.carrierwait = 0;
3017 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3019 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3022 #ifdef CONFIG_ISDN_AUDIO
3024 * Parse AT+F.. commands
3027 isdn_tty_cmd_PLUSF(char **p, modem_info *info)
3029 atemu *m = &info->emu;
3032 if (!strncmp(p[0], "CLASS", 5)) {
3037 sprintf(rs, "\r\n%d",
3038 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
3039 #ifdef CONFIG_ISDN_TTY_FAX
3040 if (TTY_IS_FCLASS2(info))
3041 sprintf(rs, "\r\n2");
3042 else if (TTY_IS_FCLASS1(info))
3043 sprintf(rs, "\r\n1");
3045 isdn_tty_at_cout(rs, info);
3052 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3053 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3054 m->mdmreg[REG_SI1] = 4;
3056 m->mdmreg[REG_PSIZE] * 16;
3058 #ifdef CONFIG_ISDN_TTY_FAX
3061 if (!(dev->global_features &
3062 ISDN_FEATURE_L3_FCLASS1))
3064 m->mdmreg[REG_SI1] = 1;
3065 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3066 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3068 m->mdmreg[REG_PSIZE] * 16;
3072 if (!(dev->global_features &
3073 ISDN_FEATURE_L3_FCLASS2))
3075 m->mdmreg[REG_SI1] = 1;
3076 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3077 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3079 m->mdmreg[REG_PSIZE] * 16;
3084 /* L2 will change on dialout with si=1 */
3085 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3086 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3087 m->mdmreg[REG_SI1] = 5;
3088 info->xmit_size = VBUF;
3092 strcpy(rs, "\r\n0,");
3093 #ifdef CONFIG_ISDN_TTY_FAX
3094 if (dev->global_features &
3095 ISDN_FEATURE_L3_FCLASS1)
3097 if (dev->global_features &
3098 ISDN_FEATURE_L3_FCLASS2)
3102 isdn_tty_at_cout(rs, info);
3113 #ifdef CONFIG_ISDN_TTY_FAX
3114 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3121 * Parse AT+V.. commands
3124 isdn_tty_cmd_PLUSV(char **p, modem_info *info)
3126 atemu *m = &info->emu;
3128 static char *vcmd[] =
3129 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
3137 if (!strncmp(vcmd[i], p[0], 2)) {
3145 /* AT+VNH - Auto hangup feature */
3149 isdn_tty_at_cout("\r\n1", info);
3159 isdn_tty_at_cout("\r\n1", info);
3170 /* AT+VIP - Reset all voice parameters */
3171 isdn_tty_modem_reset_vpar(m);
3174 /* AT+VLS - Select device, accept incoming call */
3178 sprintf(rs, "\r\n%d", m->vpar[0]);
3179 isdn_tty_at_cout(rs, info);
3194 isdn_tty_at_cout("\r\n0,2", info);
3205 /* AT+VRX - Start recording */
3208 if (info->online != 1) {
3209 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3212 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3213 if (!info->dtmf_state) {
3214 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3217 info->silence_state = isdn_audio_silence_init(info->silence_state);
3218 if (!info->silence_state) {
3219 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3222 if (m->vpar[3] < 5) {
3223 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3224 if (!info->adpcmr) {
3225 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3229 #ifdef ISDN_DEBUG_AT
3230 printk(KERN_DEBUG "AT: +VRX\n");
3233 isdn_tty_modem_result(RESULT_CONNECT, info);
3237 /* AT+VSD - Silence detection */
3241 sprintf(rs, "\r\n<%d>,<%d>",
3244 isdn_tty_at_cout(rs, info);
3248 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3249 par1 = isdn_getnum(p);
3250 if ((par1 < 0) || (par1 > 31))
3255 par2 = isdn_getnum(p);
3256 if ((par2 < 0) || (par2 > 255))
3264 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3275 /* AT+VSM - Select compression */
3279 sprintf(rs, "\r\n<%d>,<%d><8000>",
3282 isdn_tty_at_cout(rs, info);
3292 par1 = isdn_getnum(p);
3293 if ((par1 < 2) || (par1 > 6))
3299 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3301 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3303 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3305 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3307 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3319 /* AT+VTX - Start sending */
3322 if (info->online != 1) {
3323 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3326 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3327 if (!info->dtmf_state) {
3328 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3331 if (m->vpar[3] < 5) {
3332 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3333 if (!info->adpcms) {
3334 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3338 #ifdef ISDN_DEBUG_AT
3339 printk(KERN_DEBUG "AT: +VTX\n");
3343 isdn_tty_modem_result(RESULT_CONNECT, info);
3347 /* AT+VDD - DTMF detection */
3351 sprintf(rs, "\r\n<%d>,<%d>",
3354 isdn_tty_at_cout(rs, info);
3358 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3359 if (info->online != 1)
3361 par1 = isdn_getnum(p);
3362 if ((par1 < 0) || (par1 > 15))
3367 par2 = isdn_getnum(p);
3368 if ((par2 < 0) || (par2 > 255))
3372 cmd.driver = info->isdn_driver;
3373 cmd.command = ISDN_CMD_AUDIO;
3374 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3375 cmd.parm.num[0] = par1;
3376 cmd.parm.num[1] = par2;
3382 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3397 #endif /* CONFIG_ISDN_AUDIO */
3400 * Parse and perform an AT-command-line.
3403 isdn_tty_parse_at(modem_info *info)
3405 atemu *m = &info->emu;
3407 char ds[ISDN_MSNLEN];
3409 #ifdef ISDN_DEBUG_AT
3410 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3412 for (p = &m->mdmcmd[2]; *p;) {
3418 /* A - Accept incoming call */
3420 isdn_tty_cmd_ATA(info);
3424 if (info->msr & UART_MSR_DCD)
3426 if (info->msr & UART_MSR_RI) {
3427 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3430 isdn_tty_getdial(++p, ds, sizeof ds);
3432 if (!strlen(m->msn))
3433 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3434 else if (strlen(ds))
3435 isdn_tty_dial(ds, info, m);
3440 /* E - Turn Echo on/off */
3442 switch (isdn_getnum(&p)) {
3444 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
3447 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3454 /* H - On/Off-hook */
3459 isdn_tty_on_hook(info);
3463 isdn_tty_off_hook();
3466 isdn_tty_on_hook(info);
3471 /* I - Information */
3473 isdn_tty_at_cout("\r\nLinux ISDN", info);
3481 isdn_tty_report(info);
3485 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
3486 isdn_tty_at_cout(ds, info);
3491 #ifdef DUMMY_HAYES_AT
3494 /* only for be compilant with common scripts */
3503 if (info->msr & UART_MSR_DCD)
3504 /* if B-Channel is up */
3505 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT : RESULT_CONNECT64000, info);
3507 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3510 /* Q - Turn Emulator messages on/off */
3512 switch (isdn_getnum(&p)) {
3514 m->mdmreg[REG_RESP] |= BIT_RESP;
3517 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3524 /* S - Set/Get Register */
3526 if (isdn_tty_cmd_ATS(&p, info))
3530 /* V - Numeric or ASCII Emulator-messages */
3532 switch (isdn_getnum(&p)) {
3534 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3537 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
3544 /* Z - Load Registers from Profile */
3546 if (info->msr & UART_MSR_DCD) {
3548 isdn_tty_on_hook(info);
3550 isdn_tty_modem_reset_regs(info, 1);
3555 #ifdef CONFIG_ISDN_AUDIO
3558 if (isdn_tty_cmd_PLUSF(&p, info))
3562 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3563 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3566 if (isdn_tty_cmd_PLUSV(&p, info))
3569 #endif /* CONFIG_ISDN_AUDIO */
3570 case 'S': /* SUSPEND */
3572 isdn_tty_get_msnstr(ds, &p);
3573 isdn_tty_suspend(ds, info, m);
3575 case 'R': /* RESUME */
3577 isdn_tty_get_msnstr(ds, &p);
3578 isdn_tty_resume(ds, info, m);
3580 case 'M': /* MESSAGE */
3582 isdn_tty_send_msg(info, m, p);
3590 if (isdn_tty_cmd_ATand(&p, info))
3597 #ifdef CONFIG_ISDN_AUDIO
3600 isdn_tty_modem_result(RESULT_OK, info);
3603 /* Need own toupper() because standard-toupper is not available
3606 #define my_toupper(c) (((c >= 'a') && (c <= 'z')) ? (c & 0xdf) : c)
3609 * Perform line-editing of AT-commands
3613 * count length of buffer
3614 * channel index to line (minor-device)
3617 isdn_tty_edit_at(const char *p, int count, modem_info *info)
3619 atemu *m = &info->emu;
3625 for (cnt = count; cnt > 0; p++, cnt--) {
3628 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3629 /* Separator (CR or LF) */
3630 m->mdmcmd[m->mdmcmdl] = 0;
3631 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3634 isdn_tty_at_cout(eb, info);
3636 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3637 isdn_tty_parse_at(info);
3641 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3642 /* Backspace-Function */
3643 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3646 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3647 isdn_tty_at_cout("\b", info);
3652 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3655 isdn_tty_at_cout(eb, info);
3657 if (m->mdmcmdl < 255) {
3659 switch (m->mdmcmdl) {
3662 m->mdmcmd[m->mdmcmdl] = c;
3663 m->mdmcmd[++m->mdmcmdl] = 0;
3667 /* Fall through, check for 'A' */
3670 m->mdmcmd[m->mdmcmdl] = c;
3671 m->mdmcmd[++m->mdmcmdl] = 0;
3675 m->mdmcmd[m->mdmcmdl] = c;
3676 m->mdmcmd[++m->mdmcmdl] = 0;
3685 * Switch all modem-channels who are online and got a valid
3686 * escape-sequence 1.5 seconds ago, to command-mode.
3687 * This function is called every second via timer-interrupt from within
3688 * timer-dispatcher isdn_timer_function()
3691 isdn_tty_modem_escape(void)
3697 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
3698 if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) {
3699 modem_info *info = &dev->mdm.info[midx];
3702 if ((info->emu.pluscount == 3) &&
3704 info->emu.lastplus + PLUSWAIT2)) {
3705 info->emu.pluscount = 0;
3707 isdn_tty_modem_result(RESULT_OK, info);
3711 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3715 * Put a RING-message to all modem-channels who have the RI-bit set.
3716 * This function is called every second via timer-interrupt from within
3717 * timer-dispatcher isdn_timer_function()
3720 isdn_tty_modem_ring(void)
3725 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3726 modem_info *info = &dev->mdm.info[i];
3727 if (info->msr & UART_MSR_RI) {
3729 isdn_tty_modem_result(RESULT_RING, info);
3732 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3736 * For all online tty's, try sending data to
3740 isdn_tty_modem_xmit(void)
3745 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3746 modem_info *info = &dev->mdm.info[i];
3749 isdn_tty_senddown(info);
3750 isdn_tty_tint(info);
3753 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3757 * Check all channels if we have a 'no carrier' timeout.
3758 * Timeout value is set by Register S7.
3761 isdn_tty_carrier_timeout(void)
3766 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3767 modem_info *info = &dev->mdm.info[i];
3770 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3772 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3773 isdn_tty_modem_hup(info, 1);
3777 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);